I was just listening to Kliber's design insights (link). I agree with him in a number of topics, and people are discussing the video on another topic (link), but I'd like to discuss something he almost said, but left out.
Kliber mentioned how arena discorages trying to get synergistic decks, because you might just end up with a terrible or even unplayable card (in his exemple, an early Ancient Watcher, with no silence or taunt enabler). What do you guys think about the possibility of having a 35 card draft, from which you choose 30 cards in the end?
That would off course have an impact on average deck level, since people could just draft the 35 "heartarena-best" cards and choose the 30 "curvestone-best" amongst them, but at least it could encourage people to try to get that one or two dragons, or that Auctioneer, try to get some synergy on the dack and, if that does not pay out, you just don't take the "worst" card for you final deck.
Another more complicated option could even be a "sidebord" option, with 1 or 2 minutes pre-game to switch between the 5 extras and your deck. That would make situational cards less "dead". You could opt-out your Eather of Secrets against a druid, and put it back on if your next game is against a Paladin. I don't think this is a good idea, since it would make arena games take longer, specially for less experienced players who would not know how to properlly use a sideboard, but I'd like to hear what you think about it. (also, it would cost more development time...).
I actually think that would be a good idea. Arena really needs something new, and picking "high-risk" cards with the option to just throw them away if you don't get the synergy would be a breath of fresh air i m o. I haven't even played arena in at least 6 months, and that's because it's the same old thing it has always been.
I actually love this idea, and think it would *reduce* the importance of Curvestone at least somewhat as you can get synergistic cards on a more regular basis. Having an actual deck theme in arena would allow you to beat out some of those Curvestone openers, and be a huge breath of fresh air. I started playing Hearthstone in closed beta and was predominantly arena-focused from 2013-mid2016 but I've finally shifted over to constructed because I dislike the Curvestone arena meta. I endorse this change, they could even extend it out to pick 40 and then drop 10.